Ask any geek for a media player recommendation that runs on Windows, Mac, or Linux, and you're guaranteed to hear VLC mentioned quite often. It's free to download and use, includes support for just about any video format you'd want to watch, and has a dedicated team of developers behind it. The problem is, while VLC is developed as a not-for-profit open source project, other companies are taking advantage of its popularity to distribute adware and spyware.

Ludovic Fauvet, one of the developers working at VideoLan, has done a blog post about the extent of these malicious alternative versions of VLC. He lists 18 common URLs that appear in search results for VLC, all of which include crapware/adware/spyware. By far the most common are associated with pinballcorp.com, eorezo.com and tut4pc.com (do not visit them). The reason they manage to get so high up on the search listings is because they are willing to pay for adwords. At the same time, Fauvet states that asking Google to remove these links turns out to be pointless because "Google ignore us, they're making money with these scams."